Change the "Disable outdated plug-ins" lab to block them instead.

chrome/browser/tab_contents/tab_contents.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 #define CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 #pragma once
 
 #include <deque>
 #include <map>
@@ skipping 878 matching lines @@
                            const gfx::Rect& selection_rect,
                            int active_match_ordinal,
                            bool final_update);
   virtual void GoToEntryAtOffset(int offset);
   virtual void OnMissingPluginStatus(int status);
   virtual void OnCrashedPlugin(const FilePath& plugin_path);
   virtual void OnCrashedWorker();
   virtual void OnDidGetApplicationInfo(int32 page_id,
                                        const WebApplicationInfo& info);
   virtual void OnInstallApplication(const WebApplicationInfo& info);
-  virtual void OnDisabledOutdatedPlugin(const string16& name,
-                                        const GURL& update_url);
+  virtual void OnBlockedOutdatedPlugin(const string16& name,
+                                       const GURL& update_url);
   virtual void OnPageContents(const GURL& url,
                               int renderer_process_id,
                               int32 page_id,
                               const string16& contents,
                               const std::string& language,
                               bool page_translatable);
   virtual void OnPageTranslated(int32 page_id,
                                 const std::string& original_lang,
                                 const std::string& translated_lang,
                                 TranslateErrors::Type error_type);
@@ skipping 429 matching lines @@
   // Content restrictions, used to disable print/copy etc based on content's
   // (full-page plugins for now only) permissions.
   int content_restrictions_;
 
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(TabContents);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_